Fig. 1: Intra- and inter-seasonal temperature responses to leaf area index (LAI) changes.
From: Biophysical impacts of northern vegetation changes on seasonal warming patterns
a Monthly trends (shadings) of Northern Hemisphere (NH) mean LAI during 1982–2014 used as input to the seasonal simulations. The dashed curve and transparent bars indicate trends of monthly LAI and seasonally aggregated LAI values, respectively. b Linear trends of Ta driven by LAI changes within the same season (intra-seasonal) and other growing seasons (inter-seasonal). Error bars in a, b indicate uncertainty ranges [1 – standard deviation (SD)]. c Monthly trends of LAI-induced air temperature changes (ΔTa), with red and blue shadings representing positive and negative trends, respectively. The bottom panel shows the overall ΔTa trends induced by LAI changes in all growing seasons, calculated as the sum of ΔTa trends from the three seasonal runs shown separately in the above panels. ***p < 0.01; **p < 0.05; *p < 0.1; n.s., p > 0.1. MAM March-April-May, JJA June-July-August, SON September-October-November, DJF December-January-February.
